> (1) Rethinking the RTC options.  Since these RTC's require a crystal anyw=
ay, it
> would prob make more sense for me to use a second PIC with my own RTC imp=
lemented in
> it (should be easy), which generates 1-second pulses to my primary PIC's =
INT0 pin.
> 12F609's have a secondary oscillator for a watch crystal, or I can use a =
higher-
> precision primary crystal oscillator with a 10F perhaps.  Cost should be =
less and
> I'm not relying on some product that may be obsoleted in the near future.

Do the 10Fs have external crystals? I thought they all used internal oscill=
ators.


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